In order to improve the safety performance of the suspenders of arch bridges, based on the theory of double suspenders for damaged safety (adopting different area ratio for double suspenders, and setting the smaller section area as F-bar and the larger as S-bar), a design method was proposed to achieve the successive failure and fracture of suspenders by changing the stress amplitude difference of double suspenders (adding rubber cushion blocks with different rigidity under S-bar). Taking a through arch bridge in Yunnan Province as an example, it was analyzed whether the goal of damage safety can beachieve using this design method under different area ratio and rubber pad stiffness by the finite element software simulation. The results show that the design method is effective, and properly increasing the area ratio of the S-bar is conducive to the safety of the S-bar at the moment of breaking of the F-bar, and reasonably adjusting the rigidity of the rubber cushion block in series with the S-bar is conducive to improving the safety performance of the damaged safety suspender.